Practice question

Gauge pressure: Pg = ρgh. ρ = 806kg/m3, g = 10m/s2, h = 4.5m. Pg = 806×10×4.5 = 36270Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 3.6 × 10⁴ Pa. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.